Patrick J. Hassemer, NP
Nurse Practitioner · Eau Claire, WI
Patrick J. Hassemer, NP is a nurse practitioner with a practice address in Eau Claire, Wisconsin, and NPI 1871808956, issued on Aug 12, 2010. Check the license (Wisconsin 4137, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Patrick J. Hassemer
- Credential
- NP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License numbers
- 4137 WI
141783 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1400 Bellinger St, Eau Claire, WI 54703
- Phone
- (715) 838-5222
- Enumerated
- Aug 12, 2010
- Record last updated
- Aug 29, 2022
- Medicare enrollment
- Enrolled (PECOS I20101005001319); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 2010
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 3,995 in Wisconsin → Look up another NPI →
Also registered at 1400 Bellinger St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Andrea Aguayo, PHARMDPharmacist1003507492
- Boshra Al Ibraheem, MDFamily Medicine Physician1376399444
Verify Patrick J. Hassemer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 4137Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average nurse practitioner in 2024
194 Medicare Part D claims for 90 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 61 claims were for opioids.
Most prescribed
- Meloxicam114 claims
- Hydrocodone-Acetaminophen39 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Mayo Clinic Health System-Northwest Wisconsin Region IncEau Claire, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Patrick J. Hassemer among 3,995 nurse practitioner records in Wisconsin
Patrick J. Hassemer, NP is one of 3,995 nurse practitioner records with a practice address in Wisconsin. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 28% of them.
- NPI issued2010 · 28% of these records are older, 69% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2010 · median 2017 among the 2,701 with a school on file
- Record last updated2022 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
184 nurse practitioner records list a practice address in Eau Claire
They are 184 of the 3,085 NPPES records with a practice address in Eau Claire, and 3,995 nurse practitioner records in Wisconsin.
All 3,995 in Wisconsin → Every provider in Eau Claire → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Ann Bohrer, NPEau Claire, WI 547031861441032
- Theresa Brunetto, NPEau Claire, WI 547031972532596
- Kerri Crank, NPEau Claire, WI 547031275506792
- Kim Edson, NPEau Claire, WI 547031518985456
- Susan Girdhari, NPEau Claire, WI 547031093782328
- Kaye Krave, NPEau Claire, WI 547031275500506
- Kathleen Kuznar, NPEau Claire, WI 547031194787663
- Lisa O'Neill, NPEau Claire, WI 547031427010990
Common questions
What is Patrick J. Hassemer, NP's NPI number?
Patrick J. Hassemer, NP's National Provider Identifier (NPI) is 1871808956, issued on Aug 12, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Patrick J. Hassemer, NP located?
The NPPES record lists a practice address at 1400 Bellinger St, Eau Claire, WI, 54703. Phone: (715) 838-5222. Providers update this record themselves, so call before visiting.
How can I verify Patrick J. Hassemer, NP's license?
NPPES lists Wisconsin license number 4137, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Patrick J. Hassemer, NP prescribe under Medicare Part D?
In 2024, Patrick J. Hassemer, NP had 194 Medicare Part D claims for 90 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.